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Finding the Fourth Proportional to 17,555.31, 24,235.12 and 11,919.87

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Solution

The fourth proportional to 17,555.31, 24,235.12 and 11,919.87 is: 16,455.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,555.31 : 24,235.12 = 11,919.87 : x
  2. Step 2: Convert to fraction form
    17,555.31/24,235.12 = 11,919.87/x
  3. Step 3: Cross multiply
    17,555.31x = 24,235.12 × 11,919.87
  4. Step 4: Simplify right side
    17,555.31x = 288,879,479.83
  5. Step 5: Solve for x
    x = 288,879,479.83/17,555.31
  6. Step 6: Final answer
    x = 16,455.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.